Service manual

12-24
CONTROL SYSTEM
SM CINCO 1-A.1 GB
12.6.6 High/Low Pressure Protection
Whenever high or low pressure accures in the system which extend beind the system pre-defined limits, the high
and low pressure switchs turns on (short) and stops the compressor until these limits are redrawn.
Fault code error 8 (HPS) or 9 (LPS) will be shown until compressor will resume operation.
12.7 Installation Test Mode
12.7.1 Test Objectives
Find tube-communication wires mismatch. 
Instruct the technician to match the tubes to the communication wires.
Find EEV or tubing problems.
12.7.2 Test Concept
The unit will open each EEV separately in cooling mode.
Detect a temperature drop on the indoor unit.
Based on the temperature drop, the system can match the tube to the indoor unit.
12.7.3 Test Rules
Before starting the installation/technician test, make sure for the following:
No indoor communication channel is connected to non existing tube channel.1.
The number of the connected/installed indoor unit is set properly.2.
All the EEVs are connected properly to the right EEV channels.3.
No mix between the indoor unit’s tubes, each indoor unit must have its own tubes connected properly to the 4.
outdoor unit.
If the rules above are not respected, the test results will make no sense.
12.7.4 Installation test menu
12.7.5 How to do installation test
While the power is off, set the following labels on the wires:1.
On unit Label C
A
C
B
C
C
C
D
Wire name (Marked by technician) 1234
For non connected indoor units, there is no need for label.
Set the number of the connected/installed indoor units.2.
Elect ‘nID’ number under ‘it’, the selected number blinks. The factory setting value is 4.
Enter installation test (by either of the following):3.
Select ‘bgn’ under ‘it’ menu.a.
According to the following:b.
Installation Test (it)
śőőőőőőőőőőőőŧőő Number of IDUs (nID)
Œ
śőőőőőőőőőőőőőőőŧőő1
Œ
šőő2
Œ
šőő3
Œ śőő4
šőő Begin test (bgn)
šőő
Œ
Test Result (pf)- (NUL/PAS/FAL/OAT/IDU/FLT)
Œ
Matrix Table Test Result (tbl)
śőő Problem Correction (Crt)